AAT4601

General Description The AAT4601 SmartSwitch is a member of Skyworks' Application Specific Power MOSFET™ (ASPM™) product family. It is a 1.8A current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting circuit protects the input supply against large changes in load current which could cause the supply to fall out of regulation. The AAT4601 has protection from thermal overload which limits power dissipation and junction temperatures. The maximum current limit level will guarantee that 1.8A can be delivered to the load; the actual threshold is programmed with a resistor from the SET pin to ground. The quiescent supply current is typically 12μA. In shutdown mode, the supply current decreases to less than 1μA. The AAT4601 is available in a Pb-free, 8-pin SOP package and is specified over the -40°C to +85°C temperature range. DATA SHEET AAT4601 1.8A Current Limited P-Channel Switch Features Input Voltage: 2.7V to 5.5V Programmable Over-Current Threshold Low Quiescent Current ▪ 12μA Typical ▪ Less Than 1μA with Switch Off Only 2.5V Needed for ON Control Thermal Shutdown Fault Flag 2ms Fault Blanking Under-Voltage Lockout Temperature Range: -40°C to +85°C 4kV ESD Rating UL Approved—File No. E217765 8-Pin SOP Package Applications Hot Swap Supplies Notebook Computers Peripheral Ports ...